Answer: 0.17 ± 0.096
Step-by-step explanation:
Confidence interval for difference between the population proportion :

, where
= sample proportion for population 1.
= sample proportion for population 2.
= Sample size from population 1.
= Sample size from population 1.
As per given , we have
Population


Critical z-value for 99% confidence level is z*=2.576 [By z-table]
Now , the 99% confidence interval estimate for the difference between the percentages of men and women who prefer Coca Cola over Pepsi :
\
Hence, the correct answer is 0.17 ± 0.096.
Equation of a line is given by y - y1 = m(x - x1); where m is thw slope.
y - (-2) = 0(x - 0)
y = -2
For perpendicular lines, m2 = -1/m1
so, m2 = -1 / -1/3 = 3
Therefore the slope of a line perpendicular to the line is 3.
Answer:
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Step-by-step explanation:
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Suppose the width is w
Then the length will be w+4
Perimeter will be 2 (length + width) = 2 (w + w + 4 ) = 60
Solve this for w. Knowing w you can find the length and width.